1. Modern Superabsorbent Polymer Technology. Wiley: New York, 1997.
2. Absorbent Polymer Technology. Elsevier: Amsterdam, 1990.
3. Water-Absorbent Polymers: A Patent Survey
4. Polymeric Materials Encyclopedia, vol. 5, (ed). CRC Press: Boca Raton, FL, 1996; 3282.
5. Polymeric Materials Encyclopedia, vol. 10, (ed). CRC Press: Boca Raton, FL, 1996; 7901, 8051.